%chk=631SM
# HF/6-31G* OPT=QST3  MP2
 
BNH
 
   0   2
 B
 N,1,R2
 X,2,1.0,1,90.0
 H,2,R3,3,A3,1,180.0
      Variables:
 R2=1.23955
 R3=0.99636
 A3=90.0

NHB
 
   0   2
 B
 N,1,R2
 X,2,1.0,1,90.0
 H,2,R3,3,A3,1,0.0
      Variables:
 R2=1.24358
 R3=2.41414
 A3=90.0

BHN
 
   0   2
 B
 N,1,R2
 X,2,1.0,1,90.0
 H,2,R3,3,A3,1,0.0
      Variables:
 R2=1.241
 R3=1.09
 A3=140.0